diff --git a/Applications/20~Games/20~Action_Games/~nexuiz~Nexuiz b/Applications/20~Games/20~Action_Games/~nexuiz~Nexuiz
index 208778f..c6aefc1 100755
--- a/Applications/20~Games/20~Action_Games/~nexuiz~Nexuiz
+++ b/Applications/20~Games/20~Action_Games/~nexuiz~Nexuiz
@@ -1,4 +1,6 @@
 #!/bin/sh
 
-exec nvrun nexuiz $@
+which nvrun && exec nvrun nexuiz $@
+which optirun && exec optirun nexuiz $@
+exec nexuiz $@
 
diff --git a/Applications/20~Games/20~Action_Games/~sauerbraten_client-bin~Sauerbraten b/Applications/20~Games/20~Action_Games/~sauerbraten_client-bin~Sauerbraten
index 0da9e25..dc97224 100755
--- a/Applications/20~Games/20~Action_Games/~sauerbraten_client-bin~Sauerbraten
+++ b/Applications/20~Games/20~Action_Games/~sauerbraten_client-bin~Sauerbraten
@@ -1,3 +1,5 @@
 #!/bin/sh
 
-exec nvrun sauerbraten_client-bin $@
+which nvrun exec nvrun sauerbraten_client-bin $@
+which optirun exec optirun sauerbraten_client-bin $@
+exec sauerbraten_client-bin $@
diff --git a/Applications/20~Games/Arcade_Games/~etracer~TuxRacer b/Applications/20~Games/Arcade_Games/~etracer~TuxRacer
index 99ab93c..1bc92f2 100755
--- a/Applications/20~Games/Arcade_Games/~etracer~TuxRacer
+++ b/Applications/20~Games/Arcade_Games/~etracer~TuxRacer
@@ -1,3 +1,5 @@
 #!/bin/sh
 
-exec nvrun etracer $@
+which nvrun exec nvrun etracer $@
+which optirun exec optirun etracer $@
+exec etracer $@